The Effect of Salts on the Anal Gills of the Mosquito Larva

While studying the function of the anal gills of the mosquito larva (Wigglesworth, 1932) I had occasion to observe the effects of certain electrolytes upon them, and these effects seemed sufficiently unusual to deserve separate study. Their curious character is due, no doubt, to the unusual structure of the cells in question, but it is possible that some of these observations may throw light upon the behaviour of other types of cell in the animal body. In any case it will be desirable to record them before discussing the function of the so-called anal gills themselves.